Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in /var/www/html/API_Forum/vendor/api-platform/serializer/AbstractConstraintViolationListNormalizer.php:30 Stack trace: #0 {main} thrown in /var/www/html/API_Forum/vendor/api-platform/serializer/AbstractConstraintViolationListNormalizer.php on line 30